The personality of cavalry general Alexei Alekseevich Brusilov occupies a special place in Russian history. A talented cavalryman, a famous military leader of the First World War and, finally, Supreme Commander-in-Chief under the Provisional Government. Unlike many generals of the Imperial Army A.A. Brusilov remained in Soviet Russia and even served as a cavalry inspector in the Workers 'and Peasants' Red Army, becoming an enemy for most of his former colleagues. In his memoirs, A.A. Brusilov focuses on the years of the First World War, but talks about his childhood and the February Revolution, trying to explain and motivate his choice.